.container {
  display: flex;
  width: 100%;
}

.left{
  width: 24%;
  margin-right: 1%;
  height: 95vh;
  overflow: auto;
}

.middle{
  background-color: #ebebeb;
  width: 50%;
  margin-right: 1%;
  height: 95vh;
  overflow: auto;
	
}

.right {
  width: 24%;
  height: 95vh;
  overflow: auto;
}

#brief > ul {
  padding-inline-start:3px
}

#brief > li {
  list-style:none
}

.hide{
  visibility: hidden
}


 #detail{
  background-color: #ebebeb;
  font-family: -apple-system;
  font-family: "-apple-system", "Helvetica Neue", "Roboto", "Segoe UI", sans-serif;
  padding: 1%
}
.chat-sender{
  clear:both;
  font-size: 80%;
  float:left;
}
.chat-sender div:nth-of-type(1){
  float: left;
}
.chat-sender div:nth-of-type(2){
  margin: 0 50px 2px 50px;
  padding: 0px;
  color: #848484;
  font-size: 70%;
  text-align: left;
}
.chat-sender div:nth-of-type(3){
  background-color: white;
  /*float: left;*/
  margin: 0 50px 10px 50px;
  padding: 10px 10px 10px 10px;
  border-radius:7px;
  text-indent: -12px;
  word-break: break-all;
}

.chat-receiver{
  clear:both;
  font-size: 80%;
  float: right;
}
.chat-receiver div:nth-of-type(1){
  float: right;
}
.chat-receiver div:nth-of-type(2){
  margin: 0px 50px 2px 50px;
  padding: 0px;
  color: #848484;
  font-size: 70%;
  text-align: right;
}
.chat-receiver div:nth-of-type(3){
  /*float:right;*/
  background-color: #b2e281;
  margin: 0px 50px 10px 50px;
  padding: 10px 10px 10px 10px;
  border-radius:7px;
  word-break: break-all;
}

.chat-receiver div:first-child img,
.chat-sender div:first-child img{
  width: 40px;
  height: 40px;
  /*border-radius: 10%;*/
}

.chat-left_triangle{
  height: 0px;
  width: 0px;
  border-width: 6px;
  border-style: solid;
  border-color: transparent white transparent transparent;
  position: relative;
  left: -22px;
  top: 3px;
}
.chat-right_triangle{
  height: 0px;
  width: 0px;
  border-width: 6px;
  border-style: solid;
  border-color: transparent transparent transparent #b2e281;
  position: relative;
  right:-22px;
  top:3px;
}

.chat-notice{
  clear: both;
  font-size: 70%;
  color: white;
  text-align: center;
  margin-top: 15px;
  margin-bottom: 15px;
}
.chat-notice span{
  background-color: #cecece;
  line-height: 25px;
  border-radius: 5px;
  padding: 5px 10px;
}